US6991591B1 - Hip flexor inhibiting abdominal training device - Google Patents
Hip flexor inhibiting abdominal training device Download PDFInfo
- Publication number
- US6991591B1 US6991591B1 US10/406,640 US40664003A US6991591B1 US 6991591 B1 US6991591 B1 US 6991591B1 US 40664003 A US40664003 A US 40664003A US 6991591 B1 US6991591 B1 US 6991591B1
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- US
- United States
- Prior art keywords
- person
- exerciser
- leg rest
- rest assembly
- main frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/02—Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
- A63B23/0205—Abdomen
- A63B23/0211—Abdomen moving torso with immobilized lower limbs
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/40—Interfaces with the user related to strength training; Details thereof
- A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
- A63B21/4047—Pivoting movement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S482/00—Exercise devices
- Y10S482/907—Stretching
Definitions
- This invention relates to exercise devices and, in particular, this invention relates to devices for exercising a user's abdominal muscles.
- This invention substantially meets the aforementioned needs of the industry by providing an exerciser which effectively isolates abdominal muscles during an exercise experience and indicates when the exercise is being improperly performed.
- the invention is directed to equipment for strengthening and toning abdominal muscles.
- the present invention overrides undesirable contraction of corresponding muscle groups and inhibits the hip flexors during abdominal contraction with another physiological phenomenon, Reciprocal Inhibition (also one of Sherrington's Laws).
- Reciprocal Inhibition also one of Sherrington's Laws.
- a muscle contracts, its antagonist relaxes.
- contraction of the hip extensors inhibits the hip flexors, thereby effectively isolating the abdominals and relieving lower back stress.
- the exerciser may include a leg rest and a main frame assembly.
- the leg rest may have a first frame portion separated at substantially orthogonal bends from a second frame portion and a third frame portion.
- a first hinge member may be present at ends of the second and third frame portions.
- the main frame assembly may be in mechanical communication with the leg rest assembly and may have first and second tubing portions, each of the first and second tubing portions with first and second ends. The first end of the first and second tubing portions may terminate in a second hinge member. A second ends of the first and second tubing portions may be joined at an apex.
- Each of the second and members are matable with one of the first and members of the second and third frame portions via hinge members.
- a weight may be mounted to the exerciser proximate the apex formed by joined first and second tubing portions.
- a method of exercising a person's abdominal muscles is provided.
- an exerciser is supinely disposed on a substantially flat surface.
- the exerciser may include a leg rest assembly in rigid mechanical communication with a weighted main frame.
- the method may include exerting a downward force on the leg rest assembly and contracting the person's abdominal muscles.
- the downward force on the leg rest assembly is exerted until the heels and balls of the person's feet contact the flat surface, thereby displacing the main frame from resting on the flat surface.
- the heel and ball of the person's feet are maintained in contact with the flat surface.
- the method may include: forming a first end and a second end in a tubing piece, thereby defining a leg rest assembly with a first member, a second member, and a third member.
- the second and third members may generally transversely extend from the first member; obtusely bending a third and a fourth tubing piece; joining a first end of each of the third and fourth tubing pieces at an apex; installing a first hinge member at an end of each of the second member and the third members; and installing a second hinge member at a second end of the third and fourth tubing pieces.
- FIG. 1 is a perspective view of the present exerciser
- FIG. 2 is another perspective view of the present exerciser
- FIG. 3 is an exploded view of the exerciser of FIG. 1 ;
- FIG. 4 is a perspective view of a female coupler and a male coupler operably present in the exerciser of FIG. 1 ;
- FIGS. 5 a – 5 d depict a person exercising with the exerciser of FIG. 1 .
- the present exercise device effectively isolates a person's abdominal muscles during an exercise experience.
- One consideration heretofore unrecognized when seeking to isolate a person's abdominal muscles is the role performed by the person's hamstring and related muscles.
- Hamstrings have two functions: hip extension and knee flexion. When the hamstrings are used as hip extensors, the hamstrings contract synergistically with the gluteals. In the context of the Janda sit-up, this phenomenon means that the trainee's heels will be pressing against the floor. When the hamstrings act as knee flexors, the hip flexors also tend to become activated.
- the present device also provides another type of feedback to disencourage hip flexor contraction.
- the foam rollers of the present device press up against the trainee's calves, thereby tending to force the trainee's feet off the floor.
- the trainee attempts to keep the trainee's feet flat on the floor, the trainee must accomplish this by activating the trainee's hip extensors.
- the trainee's feet coming off the floor, especially near the top of the movement, provides feedback that the trainee's hip extensors are not sufficiently activated, thus enforcing the proper form in another fashion.
- FIGS. 1–3 One embodiment of the present exerciser is depicted in the figures generally at 100 and, referring to FIGS. 1–3 , includes a leg rest assembly 104 , a main frame assembly 106 , a retainer such as a spring collar 108 , a locking device such as locking tubes 110 (in combination with hinge members such as male and female couplers disposed on the leg rest assembly 104 and the main frame 106 , infra), and a weight ( FIGS. 5 a – 5 c ).
- the leg rest assembly 104 of this embodiment includes respective first, second, and third members 116 , 118 , and 120 and optionally at least one padding device such as a pair of foam pads 122 .
- the foam pads may be attached to the pipes or may rotate freely.
- Freely rotating pads may enforce stricter exercise performance, as they demand that the trainee pushes against them at a very precise angle; failure to do so will make the trainee's calves slip.
- a stricter exercise performance is understood to mean that the trainee's target muscle groups, e.g., abdominals, experience more adaptive overload.
- the second and third members 118 and 120 are unitarily (or otherwise integrally) joined to the first member 116 by bends 124 and 126 , respectively.
- Female couplers 127 and 128 are inserted and held, e.g., by friction at the ends of respective second and third members 118 and 120 .
- the bends 124 and 126 are oriented transversely, e.g., at right angles (+/ ⁇ 5, 10) degrees, with respect to the first member 116 and may be characterized by radiuses of about 2.75 (+/ ⁇ 0.5, 1.0) inches. Also in the embodiment depicted, the first member 116 is about 15.5 (+/ ⁇ 1.0) inches and the second and third members 118 and 120 are about to 9.5 (+/ ⁇ 0.5, 1) inches, excluding portions of the bends 124 and 126 .
- the foam pads 122 are made from a foamed synthetic resin, e.g., foam rubber. Other suitable resins may be identified by a person of ordinary skill in the art with out undue experimentation from the Handbook of Plastics, Elastomers, and Composites, Third Edition, herein incorporated by reference.
- the main frame assembly 106 has a pair of main frame members 130 and 132 and a cap 134 .
- the respective main frame members 130 and 132 unitarily (or otherwise integrally) include first portions 138 and 140 and second portions 142 and 144 joined at obtuse bends 146 and 148 , respectively.
- the second portions 142 and 144 terminate in male couplers 150 and 152 .
- the bends 146 and 148 are about 110 (+/ ⁇ 5) degrees and are described by radiuses of about 6 (+/ ⁇ 0.5) inches.
- the first and second portions 138 and 140 are about 20 (+/ ⁇ 0.5, 1) inches in length.
- the main frame members 130 and 132 are fixed together at an apex, e.g., by welding connectors (e.g., rivets, bolts/nuts), or the like. Alternatively the main frame members 130 and 132 may be fixed together by the cap 134 .
- the cap 134 in turn, includes a cylindrical portion 156 , an optional top cover 156 , and a lower flange 160 .
- the cylindrical portion 156 may be about 4 (+/ ⁇ 0.5, 1) inches in length and have a radius of about 1 (+/ ⁇ 0.5) inch.
- the cap 134 and flange 116 may have dimensions substantially similar to those of a similar device for mounting Olympic-size barbells.
- the locking tubes 110 may be about 6 (+/ ⁇ 0.5, 1.0) inches long and have a radius of about 0.5 (+/ ⁇ 0.25) inch.
- the spring collar 108 includes a pair of handles 164 extending from a generally circular spring member 166 . Forcing the handles 164 toward each other biases the spring element 166 , thereby increasing the diameter of the spring element 166 .
- the spring element 166 is dimensioned to fit snugly about the circumference of the cylindrical element 156 , especially when in an unbiased position.
- the present male and female couplers are present at the ends of the leg rest assembly first and second members 118 and 120 and at the ends of the main frame second portions 142 and 144 , e.g., by being forced inside the tubings from which these structures are constructed and frictionally held therein. While the present female couplers are shown as being present in the leg rest assembly and the present male couplers as being present in the main frame, it should be appreciated that male couplers could be used with the present leg rest assembly and that female couplers would be used with the present main frame. It should also be recognized that a person of ordinary skill in the art would readily identify several equivalent structures to the present male and female couplers without undue experimentation. Referring to FIG.
- the female couplers 127 and 128 and the male couplers 150 and 152 each display a first surface, such as a lateral surface 170 , intersecting a generally arcuate surface 172 and further intersecting a second surface, such as a vertical surface 174 .
- Each coupler may also terminate in a distal surface 175 .
- the vertical surface 174 is a distal surface to a flange element 176 .
- Each female coupler 127 and 128 defines a bore 178 extending between the lateral surface 170 and the arcuate surface 172 .
- Each male coupler 150 and 152 includes a male extension 180 extending from the lateral surface 170 .
- the male extension 180 is dimensioned to fit snugly within the bore 178 .
- a fastener such as a cotter pin (not shown) is extended through a bore (not shown) in the male extension 180 to retain the male extension 180 within the bore 178 .
- the lateral surface 170 may be dimensioned, and the male extension 180 disposed, such that joined female couplers 127 and 128 and male couplers 150 and 152 pivot about a longitudinal axis 182 of the male extension 180 .
- the lateral surface 170 is dimensioned and the male extension 180 is disposed such that the joined female couplers 127 and 128 and male couplers 150 and 152 are substantially rigid because the distal surfaces 175 of the present male couplers abut the vertical surfaces 174 when the present couplers are joined.
- a suitable embodiment of the present leg rest assembly and main frame has been made from Schedule 401 ⁇ 2 inch pipe.
- the main frame cap cylindrical portion 156 may be constructed from 2 inch diameter, 14 gauge tubing and the locking tubes 110 may be made from 1 in. diameter, 14 gauge tubing.
- Various steel alloys have been used for the tubing in the foregoing elements.
- Suitable synthetic resins may be identified by persons of ordinary skill in the art without undue experimentation from “Handbook of Plastics, Elastomers, and Composites, Third Addition,” Charles A. Harper Editor in Chief, McGraw-Hill, New York (1996), hereby incorporated by reference.
- the present exerciser may be assembled by sliding the foam pads 122 past the second or third member 118 or 120 and spacing the foam pads 122 generally equidistantly on the first member 116 .
- Each of the second and third members 118 and 120 may then be extended through one of the locking tubes 110 so as to expose the female couplers 127 and 128 .
- the female couplers 127 and 128 are then joined to the male couplers 150 and 152 by disposing the male extensions 180 of one of the male couplers 150 and 152 through the bores 178 of the female couplers 127 and 128 .
- the leg rest assembly 104 and the main frame 106 may then be pivoted when the present male and female couplers are joined as described supra.
- the present exerciser 100 When in the folded position, the present exerciser 100 may be unfolded and secured in an unfolded, locked position by sliding the locking tubes 110 over the joints formed by joined female and male couplers 127 – 128 and 150 – 152 .
- the weight 112 When the locking tubes 110 are in position, the weight 112 is mounted on the cap 134 and secured in place by the spring collar 110 ( FIGS. 5 a – 5 c ).
- the weight 112 may be a plate weight commonly available for barbells or the like.
- the foregoing embodiment may be folded by removing the weight 112 from the cap 134 , sliding the locking tubes 110 toward the pads 122 thereby exposing the joints formed by joining the present female and male couplers, and pivoting the leg rest assembly 104 toward the main frame 106 .
- a person advantageously utilizes the present exerciser to strengthen the person's abdominal muscles.
- the present exerciser is assembled or unfolded and secured as described supra.
- the weight 112 may weigh from 10 to 25 pounds. The amount of weight, however, is determined by the desire and level of conditioning of the person.
- the present exerciser is then placed ideally on a non-slippery surface, such as a carpet or mat.
- the person then lies in a supine position with the person's back on the floor and the person's calves atop the pads 122 ( FIG. 5 a ).
- the person then forces their calves against the pads until their feet contact the floor, thereby raising the weight from a contacting position with the floor, e.g., the heels and balls of the person's feet are pressed against, or contacting, the floor ( FIG. 5 b ).
- the person's knees may be bent at a 90 degree angle (the person's calves are generally orthogonal to the person's thighs) and the pads 122 are contacting, or pressing against, the person's calves, e.g., about halfway between the person's feet and knees.
- the person is in a proper position to begin exercising.
- the person then begins to tighten the muscles in the person's buttocks (gluteals), ideally slowly and without jerking movements.
- the person constricts the person's abdominal muscles, thereby performing a partial sit-up (or crunch) ( FIGS. 5 c and 5 d ).
- the person should require at least two seconds to perform this exercise.
- the exercise is properly performed keeping the person's feet flat on the floor and without dragging the present exerciser or the person's body across the floor.
- the person slowly relaxes until the person's head is resting on the floor ( FIG. 5 a ) to complete an exercise replication. It may be desirable for the person to rest a brief time before performing another replication.
- the present exerciser is advantageously effective in exercising a person's abdominal muscles because the present exerciser prevents the person's hip flexors from aiding in the sit-up protocol.
- the present exerciser applies an upward force to the person's calves and, thereby, eliminates the anchor point necessary for hip flexors to function. Stated otherwise, exerting an upward force on the person's calves during this exercise totally eliminates any possible anchor point for the person's hip flexors. Totally eliminating any possible anchor point for the person's hip flexors prevents the hip flexors from aiding the person's abdominal muscles during exercise and forces the person's abdominal muscles to perform the exercise in isolation.
- the present device is pulled toward the exerciser, thereby indicating that the person is exercising improperly.
- the present exerciser further enhances the exercise experience by forcing the person's gluteal muscles to contract when maintaining the present exerciser in the preferred position.
- another indication that the person is performing the exercise improperly is in response to the person relaxing the person's gluteal muscles, wherein the weight lifts the person's feet from the floor.
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- Health & Medical Sciences (AREA)
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- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Description
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/406,640 US6991591B1 (en) | 2002-04-03 | 2003-04-02 | Hip flexor inhibiting abdominal training device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US36948702P | 2002-04-03 | 2002-04-03 | |
US10/406,640 US6991591B1 (en) | 2002-04-03 | 2003-04-02 | Hip flexor inhibiting abdominal training device |
Publications (1)
Publication Number | Publication Date |
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US6991591B1 true US6991591B1 (en) | 2006-01-31 |
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ID=35694786
Family Applications (1)
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US10/406,640 Expired - Lifetime US6991591B1 (en) | 2002-04-03 | 2003-04-02 | Hip flexor inhibiting abdominal training device |
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US (1) | US6991591B1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060183606A1 (en) * | 2005-02-11 | 2006-08-17 | Parmater Kim M | Method and apparatus for targeting abdominal muscles while receiving a cardiovascular workout |
US7137930B1 (en) * | 2004-01-26 | 2006-11-21 | John Patrick Carr | Forearm/wrist curl exercise device |
US20070042879A1 (en) * | 2005-08-16 | 2007-02-22 | Panagos George C | Method and device for weightlifting and weight training |
US20100022362A1 (en) * | 2008-07-28 | 2010-01-28 | Macdonald Glenn | Assisted-exercise apparatus |
US9962311B2 (en) | 2014-03-10 | 2018-05-08 | Xeras Medical Technologies, Inc. | Method and apparatus for knee joint flexibility rehabilitation |
US10123736B2 (en) * | 2017-03-27 | 2018-11-13 | Xeras Medical Technologies, Inc. | Method and apparatus for monitoring compliance with physical therapy regimes |
US10661117B2 (en) | 2015-06-03 | 2020-05-26 | Xeras Medical Technologies, Inc. | Method and apparatus for variable knee flexion support |
USD1005414S1 (en) | 2020-11-16 | 2023-11-21 | The Ab-Axe LLC | Abdominal exercise device |
Citations (10)
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US3193288A (en) | 1962-09-11 | 1965-07-06 | Spain Le Vell De | Physical conditioning device having elastic strands |
US4026548A (en) | 1975-07-02 | 1977-05-31 | Daniel Lee Birdwell | Spring type exercise device |
US4073490A (en) | 1976-06-04 | 1978-02-14 | Feather Jack Vincent | Body attached restraining type exercising device |
US5122106A (en) * | 1988-10-20 | 1992-06-16 | Duncan F. Atwood | Stretching apparatus |
US5209482A (en) | 1992-01-22 | 1993-05-11 | Swingflex Systems, Inc. | Golf swing training and exercising device |
US5779607A (en) * | 1997-01-21 | 1998-07-14 | Harris; Robert W. | Abdominal exercise machine adapted for strength exercises |
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US6110075A (en) | 1997-10-31 | 2000-08-29 | Woodruff; Allen C. | Finger and wrist exerciser |
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-
2003
- 2003-04-02 US US10/406,640 patent/US6991591B1/en not_active Expired - Lifetime
Patent Citations (10)
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US3193288A (en) | 1962-09-11 | 1965-07-06 | Spain Le Vell De | Physical conditioning device having elastic strands |
US4026548A (en) | 1975-07-02 | 1977-05-31 | Daniel Lee Birdwell | Spring type exercise device |
US4073490A (en) | 1976-06-04 | 1978-02-14 | Feather Jack Vincent | Body attached restraining type exercising device |
US5122106A (en) * | 1988-10-20 | 1992-06-16 | Duncan F. Atwood | Stretching apparatus |
US5209482A (en) | 1992-01-22 | 1993-05-11 | Swingflex Systems, Inc. | Golf swing training and exercising device |
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US6110075A (en) | 1997-10-31 | 2000-08-29 | Woodruff; Allen C. | Finger and wrist exerciser |
US5921904A (en) * | 1998-03-16 | 1999-07-13 | Toups; Lanny J. | Portable inclimetric resistance exercise device |
US20020025895A1 (en) * | 2000-04-20 | 2002-02-28 | Sanchez Bernardo Benny | Abdominal and back exercise device |
US20030236155A1 (en) * | 2002-05-17 | 2003-12-25 | Lo-Fang Chung | Fitness apparatus for chest expansion and tension pulling |
Non-Patent Citations (7)
Title |
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Ab-Training Controversy Part I, by Jospeh M. Harrigan, D.C., Sportsmedicine, pp. 166-168, and p. 174, Sep. 1992. |
Ab-Training Controversy Part II, by Joseph M. Harrigan, D.C., Sportsmedicine, pp. 152-154, Nov. 1992. |
Beyond Crunches: Hard Science, Hard Abs, by Pavel Tsatsouline, Dragon Door Publications, Inc., pp. Introduction-123, Aug. 1998. |
Classic Crunch V.S. the Ab Pavelizer, by Pavel Tsatsouline, Beyond Crunches: Hard Science, Hard Abs, John Parrillo's Performance Press, pp. 10-11, Oct. 1999. |
Russian Special Forces Strength Training by Pavel Tsatsouline, dated Jan. 14, 2002. |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7137930B1 (en) * | 2004-01-26 | 2006-11-21 | John Patrick Carr | Forearm/wrist curl exercise device |
US20060183606A1 (en) * | 2005-02-11 | 2006-08-17 | Parmater Kim M | Method and apparatus for targeting abdominal muscles while receiving a cardiovascular workout |
US20070042879A1 (en) * | 2005-08-16 | 2007-02-22 | Panagos George C | Method and device for weightlifting and weight training |
US7311641B2 (en) * | 2005-08-16 | 2007-12-25 | Panagos George C | Method and device for weightlifting and weight training |
US20100022362A1 (en) * | 2008-07-28 | 2010-01-28 | Macdonald Glenn | Assisted-exercise apparatus |
US9962311B2 (en) | 2014-03-10 | 2018-05-08 | Xeras Medical Technologies, Inc. | Method and apparatus for knee joint flexibility rehabilitation |
US10537487B2 (en) | 2014-03-10 | 2020-01-21 | Xeras Medical Technologies, Inc. | Method and apparatus for knee joint flexibility rehabilitation |
US10661117B2 (en) | 2015-06-03 | 2020-05-26 | Xeras Medical Technologies, Inc. | Method and apparatus for variable knee flexion support |
US10123736B2 (en) * | 2017-03-27 | 2018-11-13 | Xeras Medical Technologies, Inc. | Method and apparatus for monitoring compliance with physical therapy regimes |
US20190099126A1 (en) * | 2017-03-27 | 2019-04-04 | Xeras Medical Technologies, Inc. | Method and Apparatus for Monitoring Compliance with Physical Therapy Regimes |
USD1005414S1 (en) | 2020-11-16 | 2023-11-21 | The Ab-Axe LLC | Abdominal exercise device |
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